WO2020113646A1

WO2020113646A1 - Driving method and driving circuit for display panel

Info

Publication number: WO2020113646A1
Application number: PCT/CN2018/120831
Authority: WO
Inventors: 王明良
Original assignee: 惠科股份有限公司
Priority date: 2018-12-03
Filing date: 2018-12-13
Publication date: 2020-06-11
Also published as: CN109326262A; US20210012745A1; US11657776B2; CN109326262B

Abstract

A driving method and driving circuit for a display panel. The driving method comprises the steps: divide a display panel into multiple charging areas in advance according to the distances from a data driving chip, determine a unique digital code for each charging area, and store corresponding information of the charging areas and the digital codes in a timing control chip in advance (S10); detect a charging area where a pixel to be charged is located, and output the corresponding digital code by the timing control chip according to the charging area (S11); a gamma chip receives the digital code, and generates a gamma voltage corresponding to the digital code according to an input operation voltage to drive charging operation of the charging area corresponding to the digital code (S12).

Description

Driving method and driving circuit of display panel

This application requires priority to be submitted to the Chinese Patent Office on December 3, 2018, with the application number CN201811465418.4 and the name of the Chinese patent application titled "A display panel drive method and drive circuit", the entire content of which is cited by reference Incorporated in this application.

Technical field

The present application relates to the field of display technology, and in particular to a driving method and driving circuit of a display panel.

Background technique

The statements here only provide background information related to the present application and do not necessarily constitute prior art.

With the development and progress of science and technology, LCD monitors have become the mainstream products of monitors due to the hotspots such as thin body, power saving and low radiation, which have been widely used. Most liquid crystal displays on the market are backlight type liquid crystal displays, which include a liquid crystal panel and a backlight module. The working principle of the liquid crystal panel is to place liquid crystal molecules in two parallel glass substrates, and apply a driving voltage on the two glass substrates to control the rotation direction of the liquid crystal molecules, so as to refract the light of the backlight module to generate a picture.

Among them, thin film transistor liquid crystal displays (Thin Film Transistor-Liquid Crystal) (TFT-LCD) have gradually occupied the leading position in the display field due to their low power consumption, excellent picture quality and high production yield. Similarly, a thin film transistor liquid crystal display includes a liquid crystal panel and a backlight module. The liquid crystal panel includes a color filter substrate (Color Filter Substrate, CF Substrate, also known as a color filter substrate), a thin film transistor array substrate (Thin Film Transistor Substrate, TFT Substrate) and light In the mask, a transparent electrode exists on the opposite inner side of the substrate. A layer of liquid crystal molecules (Liquid Crystal, LC) is sandwiched between the two substrates.

As the size of LCD TVs becomes larger and the resolution becomes higher and higher, the method of bilaterally driving the data line will be used to minimize this difference, but this method will bring great difficulty to the production line, and also The data lines will be doubled, causing a substantial increase in manufacturing costs.

Technical solution

The purpose of this application is to provide a driving method and driving circuit for a display panel to solve the bad display effect of the display panel

To achieve the above purpose, the present application provides a driving method of a display panel.

A driving method of a display panel, including:

According to the distance from the data driver chip, the display panel is divided into multiple charging areas in advance, a unique digital code is determined for each charging area, and the corresponding information of the charging area and the digital code is stored in the timing control chip in advance;

Detect the charging area where the pixel to be charged is located, and the timing control chip outputs the corresponding digital code according to the charging area;

The gamma chip receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging work in the charging area corresponding to the digital code.

Optionally, the display panel further includes an operating voltage circuit that generates the operating voltage; the gamma chip includes a reference voltage generating circuit and a gamma voltage generating circuit; the input terminals of the reference voltage generating circuit are respectively coupled to the In the timing control chip and the working voltage circuit, the input terminal of the gamma voltage generating circuit is coupled to the reference voltage generating circuit.

Optionally, the gamma chip receives a digital code, and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging operation of the charging area corresponding to the digital code. The steps include:

The reference voltage generating circuit receives the digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage.

Optionally, the reference voltage generating circuit receives a digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage, including the steps of:

The gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code.

Optionally, the gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code, including the steps of:

The reference voltage generating circuit receives the digital code, and multiplies the working voltage by the digital code to obtain the reference voltage.

Optionally, the reference voltage generating circuit receives the digital code, and multiplies the working voltage by the digital code to obtain the reference voltage, including the steps of:

The gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code according to the reference voltage.

Optionally, the gamma chip further includes a gamma partial pressure coefficient memory that stores the gamma partial pressure coefficient;

The gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code. The steps include:

The gamma voltage generating circuit receives the reference voltage and generates the corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging operation of the charging area corresponding to the digital encoding.

Optionally, the first side portion and the second side portion of the display panel are provided with a data driving chip adopting a data line bilateral driving method;

Or the display panel is only provided with a data driving chip on the first side or the second side, and a data line unilateral driving method is adopted.

Optionally, the farther the charging area is from the data driving chip, the greater the corresponding gamma voltage.

Optionally, the display area of the display panel is divided into a plurality of charging areas in sequence according to the number of data lines, and each charging area has a unique digital code.

Optionally, the step of detecting the charging area where the pixel to be charged is located, and the timing control chip outputting the corresponding digital code according to the charging area includes:

The counter of the timing control chip counts the number of data lines;

Optionally, after the counter of the timing control chip counts the number of rows of the data line, it includes the steps of:

The timing control chip recognizes the count value of the counter and obtains the corresponding digital code from the memory for output.

Optionally, if the count value of the counter is greater than or equal to 100 and less than or equal to 200, a corresponding digital code 2 is obtained, and the digital code 2 corresponds to 1.2 times the standard gamma voltage.

Optionally, if the count value X of the counter is greater than or equal to 200 and less than or equal to 300, a numerical code 3 corresponding to the numerical code 3 corresponding to 1.3 times the standard gamma voltage is obtained.

Optionally, if the count value X of the counter is greater than or equal to 300 and less than or equal to 400, a corresponding numerical code 4 is obtained, and the numerical code 4 corresponds to 1.4 times the standard gamma voltage.

The application also discloses a driving method of the display panel, including:

According to the distance from the data driver chip, it is divided into multiple charging areas in advance according to the number of data lines, each charging area has a unique digital code, and the corresponding information of the charging area and the digital code is stored in the timing control in advance In the chip

The counter of the timing control chip counts the number of data lines;

The timing control chip recognizes the count value of the counter and obtains the corresponding digital code from the memory for output;

The reference voltage generating circuit receives the digital code and generates a reference voltage corresponding to the digital code according to the operating voltage input by the operating voltage circuit;

The gamma voltage generating circuit receives the reference voltage and generates the corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging work of the charging area corresponding to the digital encoding;

The charging area farther away from the data driving chip, the greater the corresponding gamma voltage

The present application also discloses a driving circuit for a display panel. The above driving method is used. The driving method includes:

In this solution, the gamma voltage can be adjusted according to the charging difference in the charging area, and the darker charging area can be given a higher actual gamma voltage than the standard gamma voltage, so that the brightness of the corresponding charging area is enhanced, reducing or even eliminating the The brightness difference of the area. Moreover, this application is to generate different gamma voltages to different charging regions by providing different reference voltages to the gamma voltage generating circuit; wherein, based on different reference voltages, the gamma voltage generating circuit uses the same For circuits that generate different gamma circuits, avoid circuit changes caused by changing the architecture of the gamma voltage generating circuit and upgrade of the production line due to circuit changes, thereby avoiding an increase in generation costs.

BRIEF DESCRIPTION

The included drawings are used to provide an understanding of the embodiments of the present application, which form a part of the specification, are used to exemplify the implementation of the present application, and explain the principle of the present application together with the text description. Obviously, the drawings in the following description are only some embodiments of the present application. For those of ordinary skill in the art, without paying creative labor, other drawings can also be obtained based on these drawings. In the drawings:

1 is a schematic diagram of a flow of a method for driving a display panel according to an embodiment of the present application;

2 is a specific schematic diagram of a flow of a method for driving a display panel according to an embodiment of the present application;

3 is a schematic diagram of a display panel structure according to an embodiment of the present application;

4 is a schematic diagram of a display panel driving circuit according to an embodiment of the present application.

detailed description

The specific structural and functional details disclosed herein are merely representative and are for the purpose of describing exemplary embodiments of the present application. However, this application can be implemented in many alternative forms, and should not be interpreted as being limited to the embodiments set forth herein.

In the description of this application, it should be understood that the terms "center", "lateral", "upper", "lower", "left", "right", "vertical", "horizontal", "top", The orientation or positional relationship indicated by "bottom", "inner", "outer", etc. is based on the orientation or positional relationship shown in the drawings, only for the convenience of describing the present application and simplifying the description, rather than indicating or implying the referred device Or the element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present application. In addition, the terms “first” and “second” are used for description purposes only, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, the features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of this application, unless otherwise stated, the meaning of "plurality" is two or more. In addition, the term "comprising" and any variations thereof are intended to cover non-exclusive inclusions.

In the description of this application, it should be noted that, unless otherwise clearly specified and limited, the terms "installation", "connection", and "connection" should be understood in a broad sense, for example, it can be fixed connection or detachable Connected, or connected integrally; either mechanically or electrically; directly connected, or indirectly connected through an intermediary, or internally connected between two components. For those of ordinary skill in the art, the specific meaning of the above terms in this application can be understood in specific situations.

The terminology used herein is for describing specific embodiments only and is not intended to limit exemplary embodiments. Unless the context clearly indicates otherwise, the singular forms "a" and "an item" as used herein are also intended to include the plural. It should also be understood that the terms "including" and/or "comprising" as used herein specify the presence of stated features, integers, steps, operations, units, and/or components without excluding the presence or addition of one or more Other features, integers, steps, operations, units, components, and/or combinations thereof.

The following describes the present application with reference to the drawings and optional embodiments.

As shown in FIGS. 1 to 4, an embodiment of the present application discloses a driving method of a display panel 100, including:

S10: According to the distance from the data driving chip 140, the display panel 100 is divided into a plurality of charging areas in advance, a unique digital code is determined for each charging area, and the corresponding information of the charging area and the digital code is stored in the timing control in advance Chip 110;

S11: Detect the charging area where the pixel to be charged is located, and the timing control chip 110 outputs the corresponding digital code according to the charging area;

S12: The gamma chip 120 receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging work in the charging area corresponding to the digital code.

As the size of the LCD TV becomes larger and the resolution becomes higher and higher, the charging difference between the data line and the near end and the far end of the data driving chip 140 becomes more and more obvious when the data line charges the panel. The charging effect for the far end is poor, and the brightness is low. The charging effect at the near end is better and the brightness is higher. In this solution, the gamma voltage can be adjusted according to the charging difference in the charging area, and the darker charging area can be given a higher actual gamma voltage than the standard gamma voltage, so that the brightness of the corresponding charging area is enhanced, reducing or even eliminating the The brightness difference of the area. Moreover, this solution is to provide different reference voltages to the gamma voltage generating circuit 122 to generate different gamma voltages to different charging regions; wherein, based on different reference voltages, the gamma voltage generating circuit 122 is The same circuit generates different gamma voltages, avoiding circuit changes caused by changing the architecture of the gamma voltage generating circuit 122, and production line upgrades caused by circuit changes, thereby avoiding an increase in generation costs.

In one embodiment, the display panel 100 further includes an operating voltage circuit 130 that generates an operating voltage; the gamma chip 120 includes a reference voltage generating circuit 121 and a gamma voltage generating circuit 122; the input terminals of the reference voltage generating circuit 121 are respectively coupled to The timing control chip 110 and the working voltage circuit 130, the input terminal of the gamma voltage generating circuit 122 is coupled to the reference voltage generating circuit 121;

The gamma chip 120 receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging operation of the charging area corresponding to the digital code. The steps include:

The reference voltage generating circuit 121 receives the digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage;

The gamma voltage generating circuit 122 receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code.

In this solution, the reference voltage generating circuit 121 converts the input operating voltage into a reference voltage; the gamma voltage generating circuit 122 outputs the gamma voltage for driving according to the reference voltage, then the reference voltage also serves as the gamma voltage generating circuit 122 The reference voltage, all the gamma voltages are obtained by dividing the reference voltage, then it is equal to changing the size of the reference voltage, and the gamma voltages of different sizes are obtained. This method is simple and easy, without changing or adding other The device reduces the production difficulty.

In an embodiment, the reference voltage generating circuit 121 receives the digital code, and multiplies the working voltage by the digital code to obtain the reference voltage;

The gamma voltage generating circuit 122 receives the reference voltage and generates a gamma voltage corresponding to the digital code according to the reference voltage.

In this scheme, the gamma voltage is obtained by dividing the reference voltage. Now we can amplify the working voltage that generates the reference voltage, then we will get a reference voltage that is larger than the original, so we can get a larger voltage than the original. Gamma voltage compensates for the charging area, so that the brightness of the darker charging area is improved to reduce or even eliminate the bright and dark phenomenon at the near and far ends of the data line.

Among them, the digital code can be determined according to the actual demand and the brightness difference of the display panel, for example, when the reference voltage is obtained by dividing the voltage, the digital code can be made to be less than or equal to 0, but the farther the charging area is from the data driving chip The greater the gamma voltage, the greater the corresponding digital code.

In an embodiment, the gamma chip 120 further includes a gamma partial pressure coefficient memory 123 that stores gamma partial pressure coefficients;

The gamma voltage generating circuit 122 receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code. The steps include:

The gamma voltage generating circuit 122 receives the reference voltage and generates a corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging operation of the charging area corresponding to the digital encoding.

In this solution, according to different gamma voltage division coefficients, different voltage divisions are performed to obtain corresponding digital codes and gamma voltages under brightness requirements. Among other things, under the same conditions, the farther away from the charging area of the data driver chip, the corresponding The greater the gamma voltage. The gamma partial pressure coefficient memory 123 stores many gamma partial pressure coefficients, and setting it at the gamma chip can reduce the pressure of data transmission across the board.

In an embodiment, both the first side and the second side of the display panel 100 are provided with a data driving chip 140 using a bilateral driving method of the data line;

Or the display panel 100 is provided with a data driving chip 140 only on the first side or the second side, and adopts a data line unilateral driving method.

This solution can be applied to the data line unilateral drive architecture. In this way, the technical difficulty caused by the data line bilateral drive mode and the difficulty in producing production can be avoided, and the increase in manufacturing costs can be avoided, and Increased space occupation; it is also possible to use this data line bilaterally driven architecture. In the bilaterally driven architecture, the pixels are located at the farthest place on both sides of the data driving chip 140, and there is still a phenomenon of dimmed brightness. This method can avoid the occurrence of this phenomenon, and the architecture of bilateral drive of the data line can reduce the number and difficulty of the charging area division, etc., reducing the calculation difficulty and the need for the gamma circuit; when the data drive chip is set on one side, the data line The far-end gamma voltage is the largest; when set on both sides, the gamma voltage in the charging area corresponding to the middle of the data line is the largest.

Of course, taking the display panel as an example, with the viewer as the center, the first side is the upper side of the display panel, and the second side is the lower side of the display panel; in addition, those skilled in the art can set according to their own needs, The first side portion may be the lower side portion of the display panel, and the second side portion may be the upper side portion of the display panel.

In an embodiment, the farther the charging region is from the data driving chip 140, the greater the corresponding gamma voltage.

In this solution, the farther the charging area is away from the data driving chip 140, the larger the distance due to the increase in the resistance of the charging area, the greater the standard gamma voltage loss generated by the data driving chip 140, which in turn causes the charging area to The farther away from the data drive chip 140, the darker the brightness; the actual gamma voltage with a greater difference than the standard gamma low voltage is applied. In this way, the charging area far from the data drive chip 140 is far away and the loss is large. For some voltage compensation, the charging area far from the data driving chip 140 is near and the loss is small, so there is less voltage compensation. Among them, the brightness difference between each charging area can be better reduced, and even the charging area can be eliminated. Difference in brightness. Or the greater the difference from the standard gamma voltage, that is, the gamma voltage closest to the charging area of the data driving chip 140 is equivalent to the standard gamma voltage, and in order to offset the loss of the gamma voltage, the farther the charging area The greater the corresponding gamma voltage, the greater the magnitude of the loss is.

In an embodiment, the display area of the display panel 100 is divided into a plurality of charging areas in sequence according to the number of data lines, and each charging area has a unique digital code.

In this solution, each charging area has a unique digital code. When the gamma voltage generating circuit 122 outputs the gamma voltage for driving, one charging area corresponds to only one gamma voltage, which can ensure that the gamma voltage generating circuit generates gamma The horse voltage performs accurate voltage compensation for each charging area, so that the brightness difference between the charging areas of the display panel 100 or the brightness difference between the charging areas.

In an embodiment, the charging area where the pixel to be charged is located is detected, and the step of the timing control chip 110 outputting the corresponding digital code according to the charging area includes:

The counter 111 of the timing control chip 110 counts the number of rows of the data line;

The timing control chip 110 recognizes the count value of the counter 111, obtains the corresponding digital code from the memory, and outputs it.

In this solution, the timing control chip 110 includes a line counter 111. Since the principle of the line counter 111 is that the count X increases by 1 for each line of charging completed, and the number of lines of the scanning line is different, the distance between the corresponding pixel and the data driving chip 140 is also different. , So that the number of rows can be used to indicate the distance of pixels away from the data driving chip 140; in this way, we can design the control method when the count X is a different value according to requirements, for example, the count X can be divided into four levels , That is, 100, 200, 300, 400; if the line value X is less than or equal to 100, the corresponding digital code 1 (1.1 times the standard gamma voltage); if the line value X is greater than or equal to 100 and less than or equal to 200, Then corresponding to the digital code 2 (1.2 times the standard gamma voltage); if the line value X is greater than or equal to 200 and less than or equal to 300, then the corresponding value code 3 (1.3 times the standard gamma voltage); if the line value When X is greater than or equal to 300 and less than or equal to 400, the corresponding numerical code 4 (1.4 times the standard gamma voltage) is obtained, and so on. Correspondingly, there are also four sets of digital codes of different sizes, each of which corresponds to the gamma The voltage also increases in sequence; of course, for example, when the reference voltage is equal to the working voltage multiplied by the digital code, the digital code can also select proportional coefficient values such as 0.5, 0.55, and 0.6, respectively.

The detection and control circuit of the timing control chip 110 recognizes the count value of the counter 111, and transmits the corresponding digital code to the gamma chip 120 according to the count value. The gamma chip 120 generates a gamma voltage according to the digital code. The corresponding charging area is charged to improve the difference in brightness between different charging areas; in addition, each set of digital codes may include and correspond to multiple gamma voltages, which can accurately adjust the gamma voltage of different charging areas.

In addition, a detection and control circuit is added inside the timing control chip 110, which can recognize different sizes of X of the line counter 111 and make corresponding different outputs.

In an embodiment, the timing control chip 110 may be a timing control chip; the gamma chip 120 may be a gamma chip; the gamma voltage division coefficient memory 123 may be a gamma voltage division coefficient memory; the operating voltage circuit 130 may be an operating voltage Circuit; data driver chip 140 may be a data driver chip.

As shown in FIG. 2, as another embodiment of the present application, a driving method of a display panel 100 is disclosed, including:

S20: According to the distance from the data driving chip 140, it is divided into a plurality of charging areas in advance according to the number of data lines, each charging area has a unique digital code, and the corresponding information of the charging area and the digital code is stored in advance To the timing control chip 110;

S21: The counter 111 of the timing control chip 110 counts the number of rows of the data line;

S22: The timing control chip 110 recognizes the count value of the counter 111, obtains the corresponding digital code from the memory 111, and outputs it;

S23: The reference voltage generating circuit 121 receives the digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage;

S24: The gamma voltage generating circuit 122 receives the reference voltage and generates the corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging operation of the charging area corresponding to the digital encoding.

In the driving circuit of this solution, the timing control chip 110 outputs digital codes to the gamma chip 120 according to the corresponding charged area, and the gamma chip 120 further controls the input voltage to generate a corresponding reference voltage. This reference voltage is used as the gamma chip 120 The basis for generating the gamma voltage. The gamma voltage stores a large number of gamma voltage division coefficients. By dividing the voltage in the gamma chip, the gamma voltage of the charging area can be adjusted, and the timing control chip 110 is guaranteed. The reduction of data processing work can save the memory space of the timing control chip 110, thereby reducing the manufacturing cost of the display panel.

In one embodiment, as shown in FIGS. 1 to 4, a driving circuit 200 of a display panel 100 is disclosed, using the above driving method.

It should be noted that the limitation of each step involved in this plan is not considered to be a limitation on the order of the steps without affecting the implementation of the specific plan. The steps written in the previous step may be executed first. It can also be executed later, or even simultaneously. As long as this solution can be implemented, it should be regarded as falling within the protection scope of this application.

The technical solution of the present application can be widely used in various display panels, such as Twisted Nematic (TN) display panel, In-Plane Switching (IPS) display panel, Vertical Alignment (VA) ) Display panel, multi-quadrant vertical alignment (Multi-Domain Vertical Alignment, MVA) display panel, of course, it can also be other types of display panels, such as organic light-emitting diode (Organic Light-Emitting Diode, OLED) display panel, both The above scheme is applicable.

The above content is a detailed description of the present application in conjunction with specific optional embodiments, and it cannot be assumed that the specific implementation of the present application is limited to these descriptions. For a person of ordinary skill in the technical field to which this application belongs, without deviating from the concept of this application, several simple deductions or replacements can be made, which should be regarded as falling within the protection scope of this application.

Claims

A driving method of a display panel, including the steps of:

According to the distance from the data driver chip, the display panel is divided into multiple charging areas in advance, a unique digital code is determined for each charging area, and the corresponding information of the charging area and the digital code is stored in the timing control chip in advance;

Detect the charging area where the pixel to be charged is located, and the timing control chip outputs the corresponding digital code according to the charging area; and

The gamma chip receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging work in the charging area corresponding to the digital code.
The driving method of the display panel according to claim 1, wherein the display panel further includes an operating voltage circuit that generates the operating voltage; the gamma chip includes a reference voltage generating circuit and a gamma voltage generating circuit; Input terminals of the reference voltage generating circuit are respectively coupled to the timing control chip and an operating voltage circuit, and input terminals of the gamma voltage generating circuit are coupled to the reference voltage generating circuit.
The driving method of the display panel according to claim 2, wherein the gamma chip receives a digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging area corresponding to the digital code The steps of charging work include:

The reference voltage generating circuit receives the digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage.
The method for driving a display panel according to claim 3, wherein the reference voltage generating circuit receives a digital code and generates a reference voltage corresponding to the digital code according to the input operating voltage, including the steps of:

The gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code.
The driving method of a display panel according to claim 4, wherein the gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code, including the steps :

The reference voltage generating circuit receives the digital code, and multiplies the working voltage by the digital code to obtain the reference voltage.
The method for driving a display panel according to claim 5, wherein the reference voltage generating circuit receives the digital code and multiplies the operating voltage by the digital code to obtain the reference voltage, the steps include:

The gamma voltage generating circuit receives the reference voltage and generates a gamma voltage corresponding to the digital code according to the reference voltage.
The driving method of the display panel according to claim 4, wherein the gamma chip further comprises a gamma voltage division coefficient memory storing a gamma voltage division coefficient.
The driving method of the display panel according to claim 7, wherein the step of the gamma voltage generating circuit receiving the reference voltage and generating the gamma voltage corresponding to the digital code to drive the charging operation of the charging area corresponding to the digital code comprises:

The gamma voltage generating circuit receives the reference voltage and generates the corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging operation of the charging area corresponding to the digital encoding.
The driving method of the display panel according to claim 1, wherein the first side portion and the second side portion of the display panel are provided with data driving chips and adopt a data line bilateral driving method.
The driving method of a display panel according to claim 1, wherein only a first side portion or a second side portion of the display panel is provided with a data driving chip, and a data line unilateral driving method is adopted.
A driving method of a display panel according to claim 1, wherein the farther the charging region is from the data driving chip, the greater the corresponding gamma voltage.
The driving method of a display panel according to claim 1, wherein the display area of the display panel is divided into a plurality of charging areas in sequence according to the number of data lines.
A driving method of a display panel according to claim 12, wherein each of said charging areas has a unique digital code.
The driving method of the display panel according to claim 1, wherein the step of detecting the charging area where the pixel to be charged is located, and the timing control chip outputting the corresponding digital code according to the charging area comprises:

The counter of the timing control chip counts the number of rows of the data line.
The driving method of the display panel according to claim 14, wherein after the counter of the timing control chip counts the number of rows of the data line, it comprises the steps of:

The timing control chip recognizes the count value of the counter and obtains the corresponding digital code from the memory for output.
The driving method of the display panel according to claim 14, wherein if the count value of the counter is greater than or equal to 100 and less than or equal to 200, then correspondingly obtain the digital code 2, the digital code 2 corresponding to 1.2 times the standard Gamma voltage.
The driving method of the display panel according to claim 14, wherein, if the count value X of the counter is greater than or equal to 200 and less than or equal to 300, a corresponding numerical code 3 is obtained, and the numerical code 3 corresponds to 1.3 times Standard gamma voltage.
The driving method of the display panel according to claim 14, wherein, if the count value X of the counter is greater than or equal to 300 and less than or equal to 400, a corresponding numerical code 4 is obtained, and the numerical code 4 corresponds to 1.4 times of Standard gamma voltage.
A driving method of a display panel, including the steps of:

According to the distance from the data driver chip, it is divided into multiple charging areas in advance according to the number of data lines, each charging area has a unique digital code, and the corresponding information of the charging area and the digital code is stored in the timing control in advance In the chip

The counter of the timing control chip counts the number of data lines;

The timing control chip recognizes the count value of the counter and obtains the corresponding digital code from the memory for output;

The reference voltage generating circuit receives the digital code and generates a reference voltage corresponding to the digital code according to the operating voltage input by the operating voltage circuit; and

The gamma voltage generating circuit receives the reference voltage and generates the corresponding gamma voltage according to the corresponding gamma voltage division coefficient to drive the charging work of the charging area corresponding to the digital encoding;

Wherein, the farther the charging region is from the data driving chip, the greater the corresponding gamma voltage.
A driving circuit for a display panel using the driving method, the driving method includes:

According to the distance from the data driver chip, the display panel is divided into multiple charging areas in advance, a unique digital code is determined for each charging area, and the corresponding information of the charging area and the digital code is stored in the timing control chip in advance;

Detect the charging area where the pixel to be charged is located, and the timing control chip outputs the corresponding digital code according to the charging area; and

The gamma chip receives the digital code and generates a gamma voltage corresponding to the digital code according to the input operating voltage to drive the charging work in the charging area corresponding to the digital code.